Under normal market conditions, the Fund will invest at least 80 percent of its net assets (including investment borrowings) in equity securities of companies deemed by Energy Income Partners, LLC, the Funds investment sub-advisor (Energy Income Partners or the Sub-Advisor), to be engaged in the energy infrastructure sector. These companies principally include U.S. and Canadian natural gas and electric utilities, corporations operating energy infrastructure assets such as pipelines or renewable energy production, utilities, publicly-traded master limited partnerships or limited liability companies taxed as partnerships (MLPs), MLP affiliates, and other companies that derive the majority of their revenues from operating or providing services in support of infrastructure assets such as pipelines, power transmission and petroleum and natural gas storage in the petroleum, natural gas and power generation industries (collectively, energy infrastructure companies). The Fund will invest principally in energy infrastructure companies. In addition, under normal market conditions, the Fund will invest at least 80 percent of its net assets (including investment borrowings) in equity securities of companies headquartered or incorporated in the United States and Canada.